﻿using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Reflection;
using System.Security.AccessControl;
using System.Security.Principal;
using System.ServiceProcess;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Optimizer {
    internal static class Utilities {
        // DEPRECATED
        //internal readonly static string DefaultEdgeDownloadFolder = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "Downloads");

        internal static WindowsVersion CurrentWindowsVersion = WindowsVersion.Unsupported;

        static string productName = string.Empty;
        static string buildNumber = string.Empty;

        internal delegate void SetControlPropertyThreadSafeDelegate(Control control, string propertyName, object propertyValue);

        internal static void SetControlPropertyThreadSafe(Control control, string propertyName, object propertyValue) {
            if (control.InvokeRequired) {
                control.Invoke(new SetControlPropertyThreadSafeDelegate(SetControlPropertyThreadSafe), new object[] { control, propertyName, propertyValue });
            }
            else {
                control.GetType().InvokeMember(propertyName, BindingFlags.SetProperty, null, control, new object[] { propertyValue });
            }
        }

        internal static IEnumerable<Control> GetSelfAndChildrenRecursive(Control parent) {
            List<Control> controls = new List<Control>();

            foreach (Control child in parent.Controls) {
                controls.AddRange(GetSelfAndChildrenRecursive(child));
            }

            controls.Add(parent);
            return controls;
        }

        internal static Color ToGrayScale(this Color originalColor) {
            if (originalColor.Equals(Color.Transparent))
                return originalColor;

            int grayScale = (int)((originalColor.R * .299) + (originalColor.G * .587) + (originalColor.B * .114));
            return Color.FromArgb(grayScale, grayScale, grayScale);
        }

        internal static string GetWindowsDetails() {
            string bitness = Environment.Is64BitOperatingSystem ? "64-bit" : "32-bit";
            if (CurrentWindowsVersion == WindowsVersion.Windows10 || CurrentWindowsVersion == WindowsVersion.Windows11) {
                return string.Format("{0} - {1} ({2})", GetOS(), GetWindows10Build(), bitness);
            }
            else {
                return string.Format("{0} - ({1})", GetOS(), bitness);
            }
        }

        internal static string GetWindows10Build() {
            return (string)Registry.GetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", "DisplayVersion", "");
        }

        internal static string GetOS() {
            productName = (string)Registry.GetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", "ProductName", "");

            if (productName.Contains("Windows 7")) {
                CurrentWindowsVersion = WindowsVersion.Windows7;
            }
            if ((productName.Contains("Windows 8")) || (productName.Contains("Windows 8.1"))) {
                CurrentWindowsVersion = WindowsVersion.Windows8;
            }
            if (productName.Contains("Windows 10")) {
                buildNumber = (string)Registry.GetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", "CurrentBuild", "");

                if (Convert.ToInt32(buildNumber) >= 22000) {
                    productName = productName.Replace("Windows 10", "Windows 11");
                    CurrentWindowsVersion = WindowsVersion.Windows11;
                }
                else {
                    CurrentWindowsVersion = WindowsVersion.Windows10;
                }
            }

            if (Program.UNSAFE_MODE) {
                if (productName.Contains("Windows Server 2008")) {
                    CurrentWindowsVersion = WindowsVersion.Windows7;
                }
                if (productName.Contains("Windows Server 2012")) {
                    CurrentWindowsVersion = WindowsVersion.Windows8;
                }
                if (productName.Contains("Windows Server 2016") || productName.Contains("Windows Server 2019") || productName.Contains("Windows Server 2022")) {
                    CurrentWindowsVersion = WindowsVersion.Windows10;
                }
            }

            return productName;
        }

        internal static string GetBitness() {
            string bitness;

            if (Environment.Is64BitOperatingSystem) {
                bitness = "You are working with 64-bit";
            }
            else {
                bitness = "You are working with 32-bit";
            }

            return bitness;
        }

        internal static bool IsAdmin() {
            return new WindowsPrincipal(WindowsIdentity.GetCurrent()).IsInRole(WindowsBuiltInRole.Administrator);
        }

        internal static bool IsCompatible() {
            bool legit;
            string os = GetOS();

            if ((os.Contains("XP")) || (os.Contains("Vista")) || os.Contains("Server 2003")) {
                legit = false;
            }
            else {
                legit = true;
            }
            return legit;
        }

        // DEPRECATED
        //internal static string GetEdgeDownloadFolder()
        //{
        //    string current = string.Empty;

        //    try
        //    {
        //        current = Registry.GetValue(@"HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge", "DownloadDirectory", DefaultEdgeDownloadFolder).ToString();
        //    }
        //    catch (Exception ex)
        //    {
        //        current = DefaultEdgeDownloadFolder;
        //        ErrorLogger.LogError("Utilities.GetEdgeDownloadFolder", ex.Message, ex.StackTrace);
        //    }

        //    return current;
        //}

        // DEPRECATED
        //internal static void SetEdgeDownloadFolder(string path)
        //{
        //    Registry.SetValue(@"HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge", "DownloadDirectory", path, RegistryValueKind.String);
        //}

        internal static void RunBatchFile(string batchFile) {
            try {
                using (Process p = new Process()) {
                    p.StartInfo.CreateNoWindow = true;
                    p.StartInfo.FileName = batchFile;
                    p.StartInfo.UseShellExecute = false;

                    p.Start();
                    p.WaitForExit();
                    p.Close();
                }
            }
            catch (Exception ex) {
                Logger.LogError("Utilities.RunBatchFile", ex.Message, ex.StackTrace);
            }
        }

        internal static void ImportRegistryScript(string scriptFile) {
            string path = "\"" + scriptFile + "\"";

            Process p = new Process();
            try {
                p.StartInfo.FileName = "regedit.exe";
                p.StartInfo.UseShellExecute = false;

                p = Process.Start("regedit.exe", "/s " + path);

                p.WaitForExit();
            }
            catch (Exception ex) {
                p.Dispose();
                Logger.LogError("Utilities.ImportRegistryScript", ex.Message, ex.StackTrace);
            }
            finally {
                p.Dispose();
            }
        }

        internal static void Reboot() {
            OptionsHelper.SaveSettings();
            Process.Start("shutdown.exe", "/r /t 0");
        }

        internal static void DisableHibernation() {
            Utilities.RunCommand("powercfg -h off");
            Registry.SetValue(@"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power", "HibernateEnabled", "0", RegistryValueKind.DWord);
        }

        internal static void EnableHibernation() {
            Utilities.TryDeleteRegistryValue(true, @"SYSTEM\CurrentControlSet\Control\Power", "HibernateEnabled");
            Utilities.RunCommand("powercfg -h on");
        }

        internal static void ActivateMainForm() {
            Program._MainForm.Activate();
        }

        internal static bool ServiceExists(string serviceName) {
            return Array.Exists(ServiceController.GetServices(), (serviceController => serviceController.ServiceName.Equals(serviceName)));
        }

        internal static void StopService(string serviceName) {
            if (ServiceExists(serviceName)) {
                ServiceController sc = new ServiceController(serviceName);
                if (sc.CanStop) {
                    sc.Stop();
                }
            }
        }

        internal static void StartService(string serviceName) {
            if (ServiceExists(serviceName)) {
                ServiceController sc = new ServiceController(serviceName);

                try {
                    sc.Start();
                }
                catch (Exception ex) {
                    Logger.LogError("Utilities.StartService", ex.Message, ex.StackTrace);
                }
            }
        }

        internal static void EnableFirewall() {
            RunCommand("netsh advfirewall set currentprofile state on");
        }

        internal static void EnableCommandPrompt() {
            using (RegistryKey key = Registry.CurrentUser.CreateSubKey("Software\\Policies\\Microsoft\\Windows\\System")) {
                key.SetValue("DisableCMD", 0, RegistryValueKind.DWord);
            }
        }

        internal static void EnableControlPanel() {
            using (RegistryKey key = Registry.CurrentUser.CreateSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer")) {
                key.SetValue("NoControlPanel", 0, RegistryValueKind.DWord);
            }
        }

        internal static void EnableFolderOptions() {
            using (RegistryKey key = Registry.CurrentUser.CreateSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer")) {
                key.SetValue("NoFolderOptions", 0, RegistryValueKind.DWord);
            }
        }

        internal static void EnableRunDialog() {
            using (RegistryKey key = Registry.CurrentUser.CreateSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer")) {
                key.SetValue("NoRun", 0, RegistryValueKind.DWord);
            }
        }

        internal static void EnableContextMenu() {
            using (RegistryKey key = Registry.CurrentUser.CreateSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer")) {
                key.SetValue("NoViewContextMenu", 0, RegistryValueKind.DWord);
            }
        }

        internal static void EnableTaskManager() {
            using (RegistryKey key = Registry.CurrentUser.CreateSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System")) {
                key.SetValue("DisableTaskMgr", 0, RegistryValueKind.DWord);
            }
        }

        internal static void EnableRegistryEditor() {
            using (RegistryKey key = Registry.CurrentUser.CreateSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System")) {
                key.SetValue("DisableRegistryTools", 0, RegistryValueKind.DWord);
            }
        }

        internal static void RunCommand(string command) {
            if (string.IsNullOrEmpty(command)) return;

            using (Process p = new Process()) {
                p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                p.StartInfo.FileName = "cmd.exe";
                p.StartInfo.Arguments = "/C " + command;
                p.StartInfo.CreateNoWindow = true;

                try {
                    p.Start();
                    p.WaitForExit();
                    p.Close();
                }
                catch (Exception ex) {
                    Logger.LogError("Utilities.RunCommand", ex.Message, ex.StackTrace);
                }
            }
        }

        internal static void FindFile(string fileName) {
            if (File.Exists(fileName)) Process.Start("explorer.exe", $"/select, \"{fileName}\"");
        }

        internal static void FindFolder(string folder) {
            if (Directory.Exists(folder)) RunCommand($"explorer.exe \"{folder}\"");
        }

        internal static string GetShortcutTargetFile(string shortcutFilename) {
            string pathOnly = Path.GetDirectoryName(shortcutFilename);
            string filenameOnly = Path.GetFileName(shortcutFilename);

            Shell32.Shell shell = new Shell32.Shell();
            Shell32.Folder folder = shell.NameSpace(pathOnly);
            Shell32.FolderItem folderItem = folder.ParseName(filenameOnly);

            if (folderItem != null) {
                Shell32.ShellLinkObject link = (Shell32.ShellLinkObject)folderItem.GetLink;
                return link.Path;
            }

            return string.Empty;
        }

        internal static void RestartExplorer() {
            const string explorer = "explorer.exe";
            string explorerPath = string.Format("{0}\\{1}", Environment.GetEnvironmentVariable("WINDIR"), explorer);

            foreach (Process process in Process.GetProcesses()) {
                try {
                    if (string.Compare(process.MainModule.FileName, explorerPath, StringComparison.OrdinalIgnoreCase) == 0) {
                        process.Kill();
                    }
                }
                catch (Exception ex) {
                    Logger.LogError("Utilities.RestartExplorer", ex.Message, ex.StackTrace);
                }
            }

            Thread.Sleep(TimeSpan.FromSeconds(1));
            Process.Start(explorer);
        }

        internal static void FindKeyInRegistry(string key) {
            try {
                Registry.SetValue(@"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Applets\Regedit", "LastKey", key);
                Process.Start("regedit");
            }
            catch (Exception ex) {
                Logger.LogError("Utilities.FindKeyInRegistry", ex.Message, ex.StackTrace);
            }
        }

        internal static void Repair(bool withoutRestart = false) {
            try {
                Directory.Delete(CoreHelper.CoreFolder, true);
            }
            catch (Exception ex) {
                Logger.LogError("Utilities.ResetConfiguration", ex.Message, ex.StackTrace);
            }
            finally {
                if (!withoutRestart) {
                    // BYPASS SINGLE-INSTANCE MECHANISM
                    if (Program.MUTEX != null) {
                        Program.MUTEX.ReleaseMutex();
                        Program.MUTEX.Dispose();
                        Program.MUTEX = null;
                    }

                    Application.Restart();
                }
            }
        }

        internal static Task RunAsync(this Process process) {
            var tcs = new TaskCompletionSource<object>();
            process.EnableRaisingEvents = true;
            process.Exited += (s, e) => tcs.TrySetResult(null);

            if (!process.Start()) tcs.SetException(new Exception("Failed to start process."));
            return tcs.Task;
        }

        internal static string SanitizeFileFolderName(string fileName) {
            char[] invalids = Path.GetInvalidFileNameChars();
            return string.Join("_", fileName.Split(invalids, StringSplitOptions.RemoveEmptyEntries)).TrimEnd('.');
        }

        // attempt to enable Local Group Policy Editor on Windows 10 Home editions
        internal static void EnableGPEDitor() {
            Utilities.RunBatchFile(CoreHelper.ScriptsFolder + "GPEditEnablerInHome.bat");
        }

        internal static void TryDeleteRegistryValue(bool localMachine, string path, string valueName) {
            try {
                if (localMachine) Registry.LocalMachine.OpenSubKey(path, true).DeleteValue(valueName, false);
                if (!localMachine) Registry.CurrentUser.OpenSubKey(path, true).DeleteValue(valueName, false);
            }
            catch { }
        }

        internal static void TryDeleteRegistryValueDefaultUsers(string path, string valueName) {
            try {
                Registry.Users.OpenSubKey(path, true).DeleteValue(valueName, false);
            }
            catch { }
        }

        internal static void DisableProtectedService(string serviceName) {
            using (TokenPrivilegeHelper.TakeOwnership) {
                using (RegistryKey allServicesKey = Registry.LocalMachine.OpenSubKeyWritable(@"SYSTEM\CurrentControlSet\Services")) {
                    allServicesKey.GrantFullControlOnSubKey(serviceName);
                    using (RegistryKey serviceKey = allServicesKey.OpenSubKeyWritable(serviceName)) {
                        if (serviceKey == null) return;

                        foreach (string subkeyName in serviceKey.GetSubKeyNames()) {
                            serviceKey.TakeOwnershipOnSubKey(subkeyName);
                            serviceKey.GrantFullControlOnSubKey(subkeyName);
                        }
                        serviceKey.SetValue("Start", "4", RegistryValueKind.DWord);
                    }
                }
            }
        }

        // old and untested method
        //internal static void RestoreWindowsPhotoViewer()
        //{
        //    const string PHOTO_VIEWER_SHELL_COMMAND =
        //        @"%SystemRoot%\System32\rundll32.exe ""%ProgramFiles%\Windows Photo Viewer\PhotoViewer.dll"", ImageView_Fullscreen %1";
        //    const string PHOTO_VIEWER_CLSID = "{FFE2A43C-56B9-4bf5-9A79-CC6D4285608A}";

        //    Registry.SetValue(@"HKEY_CLASSES_ROOT\Applications\photoviewer.dll\shell\open", "MuiVerb", "@photoviewer.dll,-3043");
        //    Registry.SetValue(
        //        @"HKEY_CLASSES_ROOT\Applications\photoviewer.dll\shell\open\command", valueName: null,
        //        PHOTO_VIEWER_SHELL_COMMAND, RegistryValueKind.ExpandString
        //    );
        //    Registry.SetValue(@"HKEY_CLASSES_ROOT\Applications\photoviewer.dll\shell\open\DropTarget", "Clsid", PHOTO_VIEWER_CLSID);

        //    string[] imageTypes = { "Paint.Picture", "giffile", "jpegfile", "pngfile" };
        //    foreach (string type in imageTypes)
        //    {
        //        Registry.SetValue(
        //            $@"HKEY_CLASSES_ROOT\{type}\shell\open\command", valueName: null,
        //            PHOTO_VIEWER_SHELL_COMMAND, RegistryValueKind.ExpandString
        //        );
        //        Registry.SetValue($@"HKEY_CLASSES_ROOT\{type}\shell\open\DropTarget", "Clsid", PHOTO_VIEWER_CLSID);
        //    }
        //}

        internal static void EnableProtectedService(string serviceName) {
            using (TokenPrivilegeHelper.TakeOwnership) {
                using (RegistryKey allServicesKey = Registry.LocalMachine.OpenSubKeyWritable(@"SYSTEM\CurrentControlSet\Services")) {
                    allServicesKey.GrantFullControlOnSubKey(serviceName);
                    using (RegistryKey serviceKey = allServicesKey.OpenSubKeyWritable(serviceName)) {
                        if (serviceKey == null) return;

                        foreach (string subkeyName in serviceKey.GetSubKeyNames()) {
                            serviceKey.TakeOwnershipOnSubKey(subkeyName);
                            serviceKey.GrantFullControlOnSubKey(subkeyName);
                        }
                        serviceKey.SetValue("Start", "2", RegistryValueKind.DWord);
                    }
                }
            }
        }

        public static RegistryKey OpenSubKeyWritable(this RegistryKey registryKey, string subkeyName, RegistryRights? rights = null) {
            RegistryKey subKey;

            if (rights == null)
                subKey = registryKey.OpenSubKey(subkeyName, RegistryKeyPermissionCheck.ReadWriteSubTree, RegistryRights.FullControl);
            else
                subKey = registryKey.OpenSubKey(subkeyName, RegistryKeyPermissionCheck.ReadWriteSubTree, rights.Value);

            if (subKey == null) {
                Logger.LogError("Utilities.OpenSubKeyWritable", $"Subkey {subkeyName} not found.", "-");
            }

            return subKey;
        }

        internal static SecurityIdentifier RetrieveCurrentUserIdentifier()
            => WindowsIdentity.GetCurrent().User ?? throw new Exception("Unable to retrieve current user SID.");

        internal static void GrantFullControlOnSubKey(this RegistryKey registryKey, string subkeyName) {
            using (RegistryKey subKey = registryKey.OpenSubKeyWritable(subkeyName,
                RegistryRights.TakeOwnership | RegistryRights.ChangePermissions
            )) {
                RegistrySecurity accessRules = subKey.GetAccessControl();
                SecurityIdentifier currentUser = RetrieveCurrentUserIdentifier();
                accessRules.SetOwner(currentUser);
                accessRules.ResetAccessRule(
                    new RegistryAccessRule(
                        currentUser,
                        RegistryRights.FullControl,
                        InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit,
                        PropagationFlags.None,
                        AccessControlType.Allow
                    )
                );
                subKey.SetAccessControl(accessRules);
            }
        }

        internal static void TakeOwnershipOnSubKey(this RegistryKey registryKey, string subkeyName) {
            using (RegistryKey subKey = registryKey.OpenSubKeyWritable(subkeyName, RegistryRights.TakeOwnership)) {
                RegistrySecurity accessRules = subKey.GetAccessControl();
                accessRules.SetOwner(RetrieveCurrentUserIdentifier());
                subKey.SetAccessControl(accessRules);
            }
        }

        internal static string GetNETFramework() {
            string subkey = @"SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full\";
            int netRelease;

            using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey(subkey)) {
                if (ndpKey != null && ndpKey.GetValue("Release") != null) {
                    netRelease = (int)ndpKey.GetValue("Release");
                }
                else {
                    return "4.0";
                }
            }

            if (netRelease >= 528040)
                return "4.8";
            if (netRelease >= 461808)
                return "4.7.2";
            if (netRelease >= 461308)
                return "4.7.1";
            if (netRelease >= 460798)
                return "4.7";
            if (netRelease >= 394802)
                return "4.6.2";
            if (netRelease >= 394254)
                return "4.6.1";
            if (netRelease >= 393295)
                return "4.6";
            if (netRelease >= 379893)
                return "4.5.2";
            if (netRelease >= 378675)
                return "4.5.1";
            if (netRelease >= 378389)
                return "4.5";

            return "4.0";
        }

        internal static void SearchWith(string term, bool ddg) {
            try {
                if (ddg) Process.Start(string.Format("https://duckduckgo.com/?q={0}", term));
                if (!ddg) Process.Start(string.Format("https://www.google.com/search?q={0}", term));
            }
            catch { }
        }

        internal static void EnableLoginVerbose() {
            try {
                Registry.SetValue(@"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System", "verbosestatus", 1, RegistryValueKind.DWord);
            }
            catch (Exception ex) {
                Logger.LogError("Utilities.EnableLoginVerbose", ex.Message, ex.StackTrace);
            }
        }

        internal static void DisableLoginVerbose() {
            Utilities.TryDeleteRegistryValue(true, @"SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System", "verbosestatus");
        }

        // [!!!]
        internal static void UnlockAllCores() {
            try {
                Registry.SetValue(@"HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Power\PowerSettings\54533251-82be-4824-96c1-47b60b740d00\0cc5b647-c1df-4637-891a-dec35c318583", "ValueMax", 0, RegistryValueKind.DWord);
                Registry.SetValue(@"HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Power\PowerSettings\54533251-82be-4824-96c1-47b60b740d00\0cc5b647-c1df-4637-891a-dec35c318583", "ValueMin", 0, RegistryValueKind.DWord);
            }
            catch (Exception ex) {
                Logger.LogError("Utilities.UnlockAllCores", ex.Message, ex.StackTrace);
            }
        }

        // value = RAM in GB * 1024 * 1024
        internal static void DisableSvcHostProcessSplitting(int ramInGb) {
            try {
                ramInGb = ramInGb * 1024 * 1024;
                Registry.SetValue(@"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control", "SvcHostSplitThresholdInKB", ramInGb, RegistryValueKind.DWord);
            }
            catch (Exception ex) {
                Logger.LogError("Utilities.DisableSvcHostProcessSplitting", ex.Message, ex.StackTrace);
            }
        }

        // reset the value to default
        internal static void EnableSvcHostProcessSplitting() {
            try {
                Registry.SetValue(@"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control", "SvcHostSplitThresholdInKB", 380000, RegistryValueKind.DWord);
            }
            catch (Exception ex) {
                Logger.LogError("Utilities.EnableSvcHostProcessSplitting", ex.Message, ex.StackTrace);
            }
        }

        internal static void DisableHPET() {
            Utilities.RunCommand("bcdedit /deletevalue useplatformclock");
            Thread.Sleep(500);
            Utilities.RunCommand("bcdedit /set disabledynamictick yes");
        }

        internal static void EnableHPET() {
            Utilities.RunCommand("bcdedit /set useplatformclock true");
            Thread.Sleep(500);
            Utilities.RunCommand("bcdedit /set disabledynamictick no");
        }

        internal static void RegisterAutoStart() {
            try {
                using (RegistryKey k = Registry.CurrentUser.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true)) {
                    k.SetValue("Optimizer", Assembly.GetEntryAssembly().Location);
                }
            }
            catch (Exception ex) {
                Logger.LogError("Utilities.AddToStartup", ex.Message, ex.StackTrace);
            }
        }

        internal static void UnregisterAutoStart() {
            try {
                using (RegistryKey k = Registry.CurrentUser.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true)) {
                    k.DeleteValue("Optimizer", false);
                }
            }
            catch (Exception ex) {
                Logger.LogError("Utilities.DeleteFromStartup", ex.Message, ex.StackTrace);
            }
        }

        internal static void AllowProcessToRun(string pName) {
            try {
                using (RegistryKey ifeo = Registry.LocalMachine.OpenSubKeyWritable(@"SOFTWARE\Microsoft\Windows NT\CurrentVersion", RegistryRights.FullControl)) {
                    if (ifeo == null) return;

                    ifeo.GrantFullControlOnSubKey("Image File Execution Options");

                    using (RegistryKey k = ifeo.OpenSubKeyWritable("Image File Execution Options", RegistryRights.FullControl)) {
                        if (k == null) return;

                        k.GrantFullControlOnSubKey(pName);
                        k.DeleteSubKey(pName);
                    }
                }
            }
            catch (Exception ex) {
                Logger.LogError("Utilities.AllowProcessToRun", ex.Message, ex.StackTrace);
            }
        }

        internal static void PreventProcessFromRunning(string pName) {
            try {
                using (RegistryKey ifeo = Registry.LocalMachine.OpenSubKeyWritable(@"SOFTWARE\Microsoft\Windows NT\CurrentVersion", RegistryRights.FullControl)) {
                    if (ifeo == null) return;

                    ifeo.GrantFullControlOnSubKey("Image File Execution Options");

                    using (RegistryKey k = ifeo.OpenSubKeyWritable("Image File Execution Options", RegistryRights.FullControl)) {
                        if (k == null) return;

                        k.CreateSubKey(pName);
                        k.GrantFullControlOnSubKey(pName);

                        using (RegistryKey f = k.OpenSubKeyWritable(pName, RegistryRights.FullControl)) {
                            if (f == null) return;

                            f.SetValue("Debugger", @"%windir%\System32\taskkill.exe");
                        }
                    }
                }
            }
            catch (Exception ex) {
                Logger.LogError("Utilities.PreventProcessFromRunning", ex.Message, ex.StackTrace);
            }
        }

        internal static string GetUserDownloadsFolder() {
            try {
                return Registry.GetValue(@"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders", "{374DE290-123F-4565-9164-39C4925E467B}", string.Empty).ToString();
            }
            catch (Exception ex) {
                Logger.LogError("Utilities.GetUserDownloadsFolder", ex.Message, ex.StackTrace);
                return string.Empty;
            }
        }

        internal static void ReinforceCurrentTweaks() {
            SilentConfig silentConfig = new SilentConfig();
            Tweaks silentConfigTweaks = new Tweaks();
            silentConfig.Tweaks = silentConfigTweaks;

            #region Windows General
            silentConfig.Tweaks.EnablePerformanceTweaks = OptionsHelper.CurrentOptions.EnablePerformanceTweaks ? true : (bool?)null;
            silentConfig.Tweaks.DisableNetworkThrottling = OptionsHelper.CurrentOptions.DisableNetworkThrottling ? true : (bool?)null;
            silentConfig.Tweaks.DisableWindowsDefender = OptionsHelper.CurrentOptions.DisableWindowsDefender ? true : (bool?)null;
            silentConfig.Tweaks.DisableSystemRestore = OptionsHelper.CurrentOptions.DisableSystemRestore ? true : (bool?)null;
            silentConfig.Tweaks.DisablePrintService = OptionsHelper.CurrentOptions.DisablePrintService ? true : (bool?)null;
            silentConfig.Tweaks.DisableMediaPlayerSharing = OptionsHelper.CurrentOptions.DisableMediaPlayerSharing ? true : (bool?)null;
            silentConfig.Tweaks.DisableErrorReporting = OptionsHelper.CurrentOptions.DisableErrorReporting ? true : (bool?)null;
            silentConfig.Tweaks.DisableHomeGroup = OptionsHelper.CurrentOptions.DisableHomeGroup ? true : (bool?)null;
            silentConfig.Tweaks.DisableSuperfetch = OptionsHelper.CurrentOptions.DisableSuperfetch ? true : (bool?)null;
            silentConfig.Tweaks.DisableTelemetryTasks = OptionsHelper.CurrentOptions.DisableTelemetryTasks ? true : (bool?)null;
            silentConfig.Tweaks.DisableOffice2016Telemetry = OptionsHelper.CurrentOptions.DisableOffice2016Telemetry ? true : (bool?)null;
            silentConfig.Tweaks.DisableCompatibilityAssistant = OptionsHelper.CurrentOptions.DisableCompatibilityAssistant ? true : (bool?)null;
            silentConfig.Tweaks.DisableHibernation = OptionsHelper.CurrentOptions.DisableHibernation ? true : (bool?)null;
            silentConfig.Tweaks.DisableSMB1 = OptionsHelper.CurrentOptions.DisableSMB1 ? true : (bool?)null;
            silentConfig.Tweaks.DisableSMB2 = OptionsHelper.CurrentOptions.DisableSMB2 ? true : (bool?)null;
            silentConfig.Tweaks.DisableNTFSTimeStamp = OptionsHelper.CurrentOptions.DisableNTFSTimeStamp ? true : (bool?)null;
            silentConfig.Tweaks.DisableFaxService = OptionsHelper.CurrentOptions.DisableFaxService ? true : (bool?)null;
            silentConfig.Tweaks.DisableSmartScreen = OptionsHelper.CurrentOptions.DisableSmartScreen ? true : (bool?)null;
            silentConfig.Tweaks.DisableStickyKeys = OptionsHelper.CurrentOptions.DisableStickyKeys ? true : (bool?)null;
            silentConfig.Tweaks.DisableVisualStudioTelemetry = OptionsHelper.CurrentOptions.DisableVisualStudioTelemetry ? true : (bool?)null;
            silentConfig.Tweaks.DisableFirefoxTemeletry = OptionsHelper.CurrentOptions.DisableFirefoxTemeletry ? true : (bool?)null;
            silentConfig.Tweaks.DisableChromeTelemetry = OptionsHelper.CurrentOptions.DisableChromeTelemetry ? true : (bool?)null;
            silentConfig.Tweaks.DisableNVIDIATelemetry = OptionsHelper.CurrentOptions.DisableNVIDIATelemetry ? true : (bool?)null;
            silentConfig.Tweaks.DisableSearch = OptionsHelper.CurrentOptions.DisableSearch ? true : (bool?)null;
            #endregion
            #region Windows 8.1
            silentConfig.Tweaks.DisableOneDrive = OptionsHelper.CurrentOptions.DisableOneDrive ? true : (bool?)null;
            #endregion
            #region Windows 10
            silentConfig.Tweaks.DisableCloudClipboard = OptionsHelper.CurrentOptions.DisableCloudClipboard ? true : (bool?)null;
            silentConfig.Tweaks.EnableLegacyVolumeSlider = OptionsHelper.CurrentOptions.EnableLegacyVolumeSlider ? true : (bool?)null;
            silentConfig.Tweaks.DisableQuickAccessHistory = OptionsHelper.CurrentOptions.DisableQuickAccessHistory ? true : (bool?)null;
            silentConfig.Tweaks.DisableStartMenuAds = OptionsHelper.CurrentOptions.DisableStartMenuAds ? true : (bool?)null;
            silentConfig.Tweaks.UninstallOneDrive = OptionsHelper.CurrentOptions.UninstallOneDrive ? true : (bool?)null;
            silentConfig.Tweaks.DisableMyPeople = OptionsHelper.CurrentOptions.DisableMyPeople ? true : (bool?)null;
            silentConfig.Tweaks.DisableAutomaticUpdates = OptionsHelper.CurrentOptions.DisableAutomaticUpdates ? true : (bool?)null;
            silentConfig.Tweaks.ExcludeDrivers = OptionsHelper.CurrentOptions.ExcludeDrivers ? true : (bool?)null;
            silentConfig.Tweaks.DisableTelemetryServices = OptionsHelper.CurrentOptions.DisableTelemetryServices ? true : (bool?)null;
            silentConfig.Tweaks.DisablePrivacyOptions = OptionsHelper.CurrentOptions.DisablePrivacyOptions ? true : (bool?)null;
            silentConfig.Tweaks.DisableCortana = OptionsHelper.CurrentOptions.DisableCortana ? true : (bool?)null;
            silentConfig.Tweaks.DisableSensorServices = OptionsHelper.CurrentOptions.DisableSensorServices ? true : (bool?)null;
            silentConfig.Tweaks.DisableWindowsInk = OptionsHelper.CurrentOptions.DisableWindowsInk ? true : (bool?)null;
            silentConfig.Tweaks.DisableSpellingTyping = OptionsHelper.CurrentOptions.DisableSpellingTyping ? true : (bool?)null;
            silentConfig.Tweaks.DisableXboxLive = OptionsHelper.CurrentOptions.DisableXboxLive ? true : (bool?)null;
            silentConfig.Tweaks.DisableGameBar = OptionsHelper.CurrentOptions.DisableGameBar ? true : (bool?)null;
            silentConfig.Tweaks.DisableInsiderService = OptionsHelper.CurrentOptions.DisableInsiderService ? true : (bool?)null;
            silentConfig.Tweaks.DisableStoreUpdates = OptionsHelper.CurrentOptions.DisableStoreUpdates ? true : (bool?)null;
            silentConfig.Tweaks.EnableLongPaths = OptionsHelper.CurrentOptions.EnableLongPaths ? true : (bool?)null;
            silentConfig.Tweaks.RemoveCastToDevice = OptionsHelper.CurrentOptions.RemoveCastToDevice ? true : (bool?)null;
            silentConfig.Tweaks.EnableGamingMode = OptionsHelper.CurrentOptions.EnableGamingMode ? true : (bool?)null;
            silentConfig.Tweaks.DisableTPMCheck = OptionsHelper.CurrentOptions.DisableTPMCheck ? true : (bool?)null;
            silentConfig.Tweaks.DisableVirtualizationBasedTechnology = OptionsHelper.CurrentOptions.DisableVBS ? true : (bool?)null;
            silentConfig.Tweaks.DisableEdgeDiscoverBar = OptionsHelper.CurrentOptions.DisableEdgeDiscoverBar ? true : (bool?)null;
            silentConfig.Tweaks.DisableEdgeTelemetry = OptionsHelper.CurrentOptions.DisableEdgeTelemetry ? true : (bool?)null;
            silentConfig.Tweaks.RestoreClassicPhotoViewer = OptionsHelper.CurrentOptions.RestoreClassicPhotoViewer ? true : (bool?)null;
            #endregion
            #region Windows 11
            silentConfig.Tweaks.TaskbarToLeft = OptionsHelper.CurrentOptions.TaskbarToLeft ? true : (bool?)null;
            silentConfig.Tweaks.DisableStickers = OptionsHelper.CurrentOptions.DisableStickers ? true : (bool?)null;
            silentConfig.Tweaks.CompactMode = OptionsHelper.CurrentOptions.CompactMode ? true : (bool?)null;
            silentConfig.Tweaks.DisableSnapAssist = OptionsHelper.CurrentOptions.DisableSnapAssist ? true : (bool?)null;
            silentConfig.Tweaks.DisableWidgets = OptionsHelper.CurrentOptions.DisableWidgets ? true : (bool?)null;
            silentConfig.Tweaks.DisableChat = OptionsHelper.CurrentOptions.DisableChat ? true : (bool?)null;
            silentConfig.Tweaks.ClassicMenu = OptionsHelper.CurrentOptions.ClassicMenu ? true : (bool?)null;
            silentConfig.Tweaks.DisableCoPilotAI = OptionsHelper.CurrentOptions.DisableCoPilotAI ? true : (bool?)null;
            #endregion

            SilentOps.CurrentSilentConfig = silentConfig;

            if (CurrentWindowsVersion == WindowsVersion.Windows7) {
                SilentOps.ProcessTweaksGeneral();
            }
            if (CurrentWindowsVersion == WindowsVersion.Windows8) {
                SilentOps.ProcessTweaksGeneral();
                SilentOps.ProcessTweaksWindows8();
            }
            if (CurrentWindowsVersion == WindowsVersion.Windows10) {
                SilentOps.ProcessTweaksGeneral();
                SilentOps.ProcessTweaksWindows10();
            }
            if (CurrentWindowsVersion == WindowsVersion.Windows11) {
                SilentOps.ProcessTweaksGeneral();
                SilentOps.ProcessTweaksWindows10();
                SilentOps.ProcessTweaksWindows11();
            }
        }
    }
}
